How could mermaids talk with gills?
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Recently I was pondering mermaids and was wondering how their respiratory systems work. Most importantly, how could their vocal chords continue to function? Secondly, how would they draw the water through external gills? It would have to be different than human breathing because there is no suction.
Two points to note: 1. They have a lung system which can function above water 2. The gills should preferably be external
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